Air coupling-valve.



F. KNACK.

AR OOUPLING VALVE.

A APPLICATION FILED MAR. 31, 1911.

1,022,851., y Patented Apr.9,1912;1

UNITED erariale/,PATENT OFFICE.

n anni)y KNACK, orfcrinvnnanp, omo.

Am COUPLING-VALVE.

i To lall whom t may concern Be it known that I, Flinn/KNACK, a-citizen of the United States, residing at Cleveland, in the county of Cuyahoga-and State of Ohio, have invented certain new and useful Improvements in Air Coupling-Valves, of which the following is a specication.

This invention relates to valves, and more particularly vto airy coupling valves, the ob Ject` of. the invention being to provide an improved valve of this character which will be inexpensive to manufacture and efficient in its. use.

The invention as 4hereinafter described 'comprises of novelty inconstruction, as will be .more fully understood by reference to the accompanying drawings, m which- Figurev 1 is a vertical longitudinal section of the valve members int-heir coupled position. Fig. 2 is a top View' of the female member, art broken away. ',Fig. 3 is a top view oft e male member. Fig. 4- is an end View of the female member, and Fig. 5 is a similar view of the male member-. Fig. 6- is a sectional view on the line 6-6 of 1`.

Referring specifically to .the` drawings, in which similar reference characters indicate similar parts, the male coupling member comprises a cylindrical casing 7. havingthe inner chamber 15, an integral/sleeve 18 of reduced diameter .at one end thereof, and the cylindrical hose attaching portion 9 at the other end thereof, which are a-llin aline` ment or. have a common axis. The bore 21 extends through the sleeve 18 to the chamber 15, and the passage Y1"(le;.1ds from the outer end of the portion 9 to the chamber 15. A cross-piece 144i11 the casing Z has a central hole 41, throughAWhich the stem 12 of the Valve disk 11y slide-slrl The valve disk is. arranged' on thcinneif'" end of the said stem, also having its rear side concaved as shown at 16, and the outer end of the stem has a key slot 13 therein. This valve disk can readily be inserted through the bore 21 of the sleeve 18,'and then when in position l a bushing 19 is screwed intothe sleeve 1S by means of the external threaded .portion of the said bushing engaging the internal thread of the counter-bore 42 in the outer end of the saidsleeve, the -keyslots 20 being used to turn the said bushing. The outer `face and inner end of the bushing is reduced in'diameter to snugly fit within the inner end of the bore 21 as shown at 43. l1`he inner end of the said bushing 19 forms the seat Specification of Letters Patent. Appiicanbninea Maren s1, 1911. seri-.11110. 618,238.

Patented Apr. e, 1912.

On the -periphery of the sleeve 18 and diametrically opposed to each other are the cam lugs 35 having their rear sides cammed or inclined as shown.z Concentric withthe sleevev 18and the casing 7y and on the inner end of the said casing is an annular recess 30 containing a suitable packing ring or gasket, and onf/the edgeof the said end of the cas-A ing 7,/ are the two diamet-rically opposed notches 32. i

`The female member comprises a cylindrical casing 8 of approximately the same dimensions as the male casing 7- having the inner chamber 33, and the hose Yattaching l for the valv/efdisk both being K4suitably beveled. The said seat is indicated at 22. Y

portion 10v at its outer end, through Awhich the longitudinal passa-ge l34 extends to vthe said chamber The inner end of the cas-f ingA 8 is open for the entrance of the sleeve, 18 of the male member. A central pin o1- inger 23 ismou'nted on the cross-piece 24 of the casing 8 to project out the inner endA Q-f the said casing, being adapted to strike the,`

v'alve disk 11 of the male memberwhen the two parts are brought together. Internal cam lugs 36' in the casing 8 which are dialnetrically opposed to eachy other have 'their rear sides inclined or cammed to coperatie 'with the lugs 35 ofthe sleeve 18 to bind the two members together, by passing/them between each other as will be understood andy turning the said members to bring the ina chncd portions against each other and draw.

the endsof the members together. Thean-l nular rrb 31011 the end of the casing 8 is arranged to enter the'recess- 30 to form a u the said groove. The inner or forward end of the said latch bears the pawl point 284 and the rear end is inclined outwardly andv is knurled as shownat. 26. A wire spring 27 or 1the like is Iastened to the '-reanend of A the .sald latch and is arched around `theoute'i end of the' casing to be attached to'lf'g on the end of the casing. 'This s ring tends to force the said latch orwar vorinward each other. The projecting wall 37 outside of the spring 2T protects same from external forces.

In use, as the two members are brought together and the cam lugs 35 and 36 brought into Contact the pawl point 2S engages in one of the notches to hold the members firmly together. In this position the air is freeto flow around the valve disk 1l which has been forced from its seat by the finger 23, but as the members are separated and the finger 23 removed from the Valve disk 11 the air, which flows in the direction of the arrow in Fig. l, catches the valve disk, being assisted `by the concaved back side thereof, and forces same tightly against its seat to prevent the escape of air when the said members are so separated The bushing 19 can readily be removed to regrind the valve seat, and the valve disk can then also be removed. Vhen in assembled position the valve disk can be ground on the valve seat, or turned thereon, to better the contact between same to effectively close'oft' the air supply' by vinserting a key through the passage 1T to engage` the slot 13 in the end of the stem 12 of the valve disk 11. The construction described also provides for cheapness by allowing a number of the various parts to be made or cast integrally as wili :Je apparent. The construction also adords of a symmetrical appear-ance of the coupling, which not only adds to the appearance but to the use as well.

It'is understood that the hose portions 9 Vand 10 may be modified or altered, 0r they may be entirely replaced by any ofthe well known means for attaching' hoses, pipes, tubing or the like, the construction of the Lmembers proper 'allowing for any devicesfor the above purpose that it is es ired to use to be attached to the outer ends thereof and be made integral therewith. It is also understood that the construction of thel -coupling the members, a spring arm attached to said member and a locking pawl carried by said arm adapted tov engage recesses in the first member.

2. The combination with a coupling member having a reduced extension, a bushing in the extension formed with a valve seat, an

integral perforated web and a valve and valve stem loosely supported` therein; of a second member incasing said extension and formed withan integral finger for holding said valve unsated, coupling meansa locking 'pawl on one member adapted to engage a recess on the other member, and a curved springarm attached to said vlocking pawl.

In testimony whereof I atlix my signature in the presence of two witnesses.

FRED KNACK.

Witnesses:

EUGENE E. VOLF, MONROE E. MILLER.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C." v 

